@misc{prange_totalreflection_xray_1990, 
author={Prange, A.,Kramer, K.,Reus, U.},
title={Totalreflection X-ray fluorescence analysis of ultrapure reagents at the sub ng/ml level},
year={1990},
howpublished = {conference lecture: New York, NY (USA); 05.-09.03.1990},
note = {Online available at: \url{} (DOI). Prange, A.; Kramer, K.; Reus, U.: Totalreflection X-ray fluorescence analysis of ultrapure reagents at the sub ng/ml level. The Pittsburgh Conference. New York, NY (USA), 1990.}}